package com.apple.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.SQLIntegrityConstraintViolationException;

/*
* 全局异常处理
* */
@ControllerAdvice(annotations = {RestController.class, Controller.class})   // 标识这个类是一个全局异常处理类
@ResponseBody   // 返回json数据
@Slf4j
public class GlobalExceptionHandler {
    /**
    * 异常处理方法
    * @return
    * */
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.error(ex.getMessage());// 获取异常信息
        //判断异常的种类，进一步确定异常，并且给出对应的异常信息
        if (ex.getMessage().contains("Duplicate entry")){
            String[] split = ex.getMessage().split(" ");
            String msg = split[2] + "已存在！";
            return R.error(msg);
        }
        return R.error("未知错误");
    }
    /**
     * 异常处理方法
     * @return
     * */
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex){
        log.error(ex.getMessage());// 获取异常信息
        return R.error(ex.getMessage());
    }
}
